Reefkeeper lite keeping my oebt tank with in .2 of a degree on my oebt tank. Just ordered the DIY controller from amazon for $20 to use on my tb tank. Will be interesting to see how it compares to the much more expensive reefkeeper.

If you have big size tank like 20 gal+ you should consider using chiller or DIY chiller it better than having to top off every day.

I have a mini fridge and I might do it like this, just drill the hole, insert coil of tube and run it through the inflow and outflow of your canister filter.

I believe the issue with this idea is being able to control how "cold" the water will be? It's a fridge after all and unless this is hooked up to a controller it would keep lowering the temp of your tank until it's around the same temp as your fridge?

If a controller is required, then the mini fridge + controller is probably the same cost as a basic chiller?

It has 4 outlets but I believe you can only run one maybe 2 probes off of it. You can buy another power strip from them that has another probe input but they are close to the price of the original unit. I love the thing to death and control the lights on 2 tanks and led dimming on my oebt tank plus the temp and a wave maker. I got another probe input when I bought the alc, the unit used to dim LEDs, but that was like $80 too. I think if you go with the higher up models you have the option of more probes but not totally sure. Basically they are nice, but definitly not cheap, that is why I am going to try out the DIY temp controller.

I believe the issue with this idea is being able to control how "cold" the water will be? It's a fridge after all and unless this is hooked up to a controller it would keep lowering the temp of your tank until it's around the same temp as your fridge?

Yes, heat transfers to cold, not the other way around. The heat leaving the coiled hose cools it, and warms the fridge as a result. The fridge will then be running 24/7 in an attempt to cool itself back down. In turn, equilibrium will only be met if the tank water reaches the setting of the fridge.

Forgot to add. They already have a controller built in, but it only monitors fridge temps.

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